quagmire, morass, mire, tar pit, abyss, cesspool, muck, minefield, swamp, mud puddle, precipice, treacle, mudhole, netherworld, oblivion, mud, rut, irrelevancy, whirlpool, spelunk, twilight zone, puddle, tightrope, despond, abysses, murk, undertow, banana peel, mess, vortex, nothingness, treading water, cliff, maze, hardpan, miasma, chasms, thicket, brinks, flypaper, trap, labyrinth, deathtrap, sand, crevice, sinking, muddle, crawl, wasteland, cesspit, purgatory, anthill, backwaters, perdition, slimy, glob, drudging, platitude, despair, posthole, maginot line, lily pad, slagheap, rabbit hole, shoals, slimey, maelstrom, footing, belly flop, irrelevance, heap, riptide, mirages, wading, nightmare, pile, drowning, pickle, charnel house, cobweb, stinking, slime, rockface, neverland, plughole, pebble, stale, vicious circle, backwash, disintegrating, metaphor, bedrock, headlong, excrescence, gloop, crosscurrent, kerplunk, mediocrity, stasis, muskeg, ripcord, leeches, quagmires, quicksands, straitjacket, dynamite, legerdemain, iceberg, limbo, pitfalls, bog, quandary, vacuum, impasse, monstrosity, miry, peaty, mucky, muddy, pervious, brackish, drained, gravelly, impervious, marshy, rushy, scummy, shallow, stagnant, boggy, lake, loamy, swampy, sandy, silted

cavity, pit